Honda is one of the most invested carmakers in hydrogen fuel cell technology, and its spaceship-like FCEV concept is meant to show off the company's latest progress while also hinting at a future vehicle. Promising to launch a 2015 hydrogen fuel cell sedan with a driving range greater than 300 miles and capable of refilling in under 3 minutes, Honda says the fuel cell pack in the FCEV is 35 percent smaller than the pack in its previous FXC Clarity concept and the complete powertrain fits under the hood.

Noting its partnership with GM to develop fuel cell technology and various fueling station initiatives, Honda doubled down on its dedication to making the first mass-produced hydrogen fuel cell vehicle. Then again, it feels like we've heard this all before.